WS MoreOrLess: Gravitational Waves
One of our 2015 \u2018Numbers of the Year\u2019 predictions might have come to pass. There is great excitement over rumours that one of the predictions Einstein made in his theory of General Relativity has finally been observed. But it\u2019s not the first time it\u2019s been reported that \u2018gravitational waves\u2019 have been discovered, and the last time proved to be an equipment test.
What is the total number of possible tweets that could be created from 140 characters? In a recent programme Professor John Allen-Paulos told us that when you take into account all of the symbols available, the total number of possible tweets is Googol^2.8 (which is a 1 followed by 280 zeros.) But has he missed some options?